@ if you are trying to download the webroot trial, try the following link for business trial software:

http://www.webroot.com/us/en/business/products/trials

 

To answer your other question, an avatar is your online persona.  It is how you appear in the forums to other forum users.  So in this case your avatar is dakota-1.  You can customise this persona in your forum preferences to change the name displayed or the image.

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